After what episode of cardcaptor sakura do you watch movie 1?

You should watch Cardcaptor Sakura Movie 1: The Sealed Card after episode 45 of the anime series.

This is because:

* The movie takes place chronologically between episodes 45 and 46.

* The movie introduces a new card, "The Sealed Card," which is crucial for the storyline of the remaining episodes.

Watching the movie after episode 45 ensures you understand the context and the importance of the Sealed Card within the overall story.